Catmandu is a command line tool to access and convert data from your digital library, research services or any other open data sets. Download data via protocols such as OAI-PMH, SRU, SPARQL and Linked Data Fragments. Convert formats such as MARC, MODS, Dublin Core and many more. via Pocket

Data Package is a simple container format used to describe and package a collection of data. The format provides a simple contract for data interoperability that supports frictionless delivery, installation and management of data. Data Packages can be used to package any kind of data. via Pocket

VisiData is free, open source, and can be installed in seconds on any Linux or MacOS system with Python3 installed. Just open your terminal and type: Immediately start browsing large datasets while they load in the background. Every command is only one or two keystrokes. via Pocket